Vehicle chassis



FIG. 1 is an elevated rear right and perspective elevational view of the ornamental design;

FIG. 2 is a plan view of our claimed design;

FIG. 3 is a right side view of our claimed design;

FIG. 4 is a left side view of our claimed design;

FIG. 5 is a front view of our claimed design; and,

FIG. 6 is a rear view of our claimed design. 

The ornamental design for a vehicle chassis, as shown and described. 